The rainfall for the month of July was above average. The water level in a small lake measured 8 3/4 feet at the beginning of the month. Due to all the rainfall, the water level rose 3/5 of a foot per week for the first three weeks, then the lake dropped 1/2 foot in the last week of the month. What was the water level of the lake at the end of July?
A. 7 11/20 ft
B. 9 7/9 ft
C. 10 1/20 ft
D. 10 11/20 ft

c. 10 1/20 is your answer

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.